The TweetDeck team is adding Facebook integration to their next version of their Adobe Air-based application:
…you can click on the Facebook icon at the top and, once you have signed into Facebook and given TweetDeck authorisation, this will add a new column full of each of your friends most recent status update which updates automatically once a minute. From here you can email the update out to anyone, tweet it out over twitter, view the users online status and if they are online right now click on their name (or the green online status indicator) to open Facebook chat right within TweetDeck.
Pretty cool, and it further shows that Facebook is really, really wanting a piece of Twitter’s pie.